Engine running, impeller pumping raw water, but open/close valve blocks water fl

[lenny2113]

I am sorry for kind of posting same type of question as on this Thread <br /><br />I want to make a flush system using a couple of open/close valves. I want to run the engine while flushing with fresh water.<br /><br />Question: <br />Will it cause damage to pump impeller or anything else if I run the engine with a closed water passage at the raw water intake hose?<br />Please, shere your experience Thank you

 

[tommays]

Re: Engine running, impeller pumping raw water, but open/close valve blocks wate

Re: Engine running, impeller pumping raw water, but open/close valve blocks wate

on paper a floppy vane pump will reach its pressure and the vanes will just self adjust and nothing will happen<br /><br />in Reality the water is going to get hot from the friction and at some point get real hot because theres no fresh water to cool it<br /><br />it would be more complex to plumb but IMHP better to give the raw water some way to go overboard<br /><br />there are plenty of bronze 3 way valves at places like mcmaster carr to make a DIY system<br /><br />

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<br />tommays